Only the current version so far — new entries appear as the app ships updates.
郵便番号簡単検索 Pro is a tools app by michiharu_s with 10+ downloads (about 16 estimated). Install growth, rank history, SDKs and ad networks.
From the store listing: “The definitive postal code search app that allows you to easily search postal codes with simple operations! ! This app is a paid version with no ads!”
